Strange behaviour with ExtJS5 *-touch themes

On my application, developed with Sencha Architect 3.1.0 build 1934, the *-touch themes (neptune-touch and crisp-touch) have strange behaviours, like the css is wrong.

Here is a window with crisp theme:

crisp.png

Here is the same window with crisp-touch theme:

crisp-touch.png

As you can see, the calendar field icon and the close window tool are kind of messed up.

I've already cleaned up the build directory and browser cache...

Strange behaviour with ExtJS5 *-touch themes